Jahangir Razmi, 1980. Iranian Kurdish prisoners executed by firing squad. Pulitzer Prize 1980 (awarded 26 years later when his identity surfaced).
From Wikipedia
The Embassy of the United States of America in Tehran was the American diplomatic mission in the Imperial State of Iran. Direct bilateral diplomatic relations between the two governments were severed following the Iranian Revolution in 1979, and the subsequent seizure of the embassy in November 1979.